Control of locomotion with shape-changing wheels

We present a novel approach to controlling the locomotion of a wheel by changing its shape, leading to applications to the synthesis and closed-loop control of gaits for modular robots. A dynamic model of a planar, continuous deformable ellipse in contact with a ground surface is derived. We present two alternative approaches to controlling this system and a method for mapping the gaits to a discrete rolling polygon. Mathematical models and dynamic simulation of the continuous approximation and the discrete n-body system, and experimental results obtained from a physical modular robot system illustrate the accuracy of the dynamic models and the validity of the approach.

[1]  Mark H. Yim,et al.  Locomotion With A Unit-Modular Reconfigurable Robot , 1995 .

[2]  Bernard Roth,et al.  On the planar motion of rigid bodies with point contact , 1986 .

[3]  Satoshi Murata,et al.  Stiffness distribution control - locomotion of closed link robot with mechanical softness , 2006, Proceedings 2006 IEEE International Conference on Robotics and Automation, 2006. ICRA 2006..

[4]  Shinichi Hirai,et al.  Circular/Spherical Robots for Crawling and Jumping , 2005, Proceedings of the 2005 IEEE International Conference on Robotics and Automation.

[5]  Mark Yim,et al.  PolyBot: a modular reconfigurable robot , 2000, Proceedings 2000 ICRA. Millennium Conference. IEEE International Conference on Robotics and Automation. Symposia Proceedings (Cat. No.00CH37065).

[6]  Wei-Min Shen,et al.  Multimode locomotion via SuperBot reconfigurable robots , 2006, Auton. Robots.

[7]  Andrew Howard,et al.  Design and use paradigms for Gazebo, an open-source multi-robot simulator , 2004, 2004 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) (IEEE Cat. No.04CH37566).

[8]  Mark Yim,et al.  Dynamic Rolling for a Modular Loop Robot , 2006, ISER.

[9]  Mark Yim,et al.  Automatic Configuration Recognition Methods in Modular Robots , 2008, Int. J. Robotics Res..

[10]  Arthur C. Sanderson,et al.  Dynamic rolling locomotion and control of modular robots , 2002, IEEE Trans. Robotics Autom..